Ruination

Armageddon

Silverbluff Bridge

This land enters tapped.
Indestructible
{T}: Add {U} or {R}.

Cascading Cataracts

Indestructible
{T}: Add {C}.
{5}, {T}: Add five mana in any combination of colors.

Razortide Bridge

This land enters tapped.
Indestructible
{T}: Add {W} or {U}.

Darksteel Citadel

Rustvale Bridge

This land enters tapped.
Indestructible
{T}: Add {R} or {W}.

Thornglint Bridge

This land enters tapped.
Indestructible
{T}: Add {G} or {W}.

Tanglepool Bridge

This land enters tapped.
Indestructible
{T}: Add {G} or {U}.

Slagwoods Bridge

This land enters tapped.
Indestructible
{T}: Add {R} or {G}.

Omnath, Locus of Creation

When Omnath enters, draw a card.
Landfall — Whenever a land you control enters, you gain 4 life if this is the first time this ability has resolved this turn. If it's the second time, add {R}{G}{W}{U}. If it's the third time, Omnath deals 4 damage to each opponent and each planeswalker you don't control.